Cannot find bean XXXForm in any scope

最新推荐文章于 2020-02-29 18:28:06 发布
原创 最新推荐文章于 2020-02-29 18:28:06 发布 · 546 阅读 · 0 ·
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#java

本文详细解析了Struts框架中配置文件的常见错误之一：实例化对象名称与配置文件中的名称不一致导致的问题。通过一个具体例子展示了如何定位并解决此类配置错误。

 

action-mappings >
    <action
      attribute="calcForm"
      input="/form/calc.jsp"
      name="calcForm"
      path="/calc"
      scope="request"
      type="com.yourcompany.struts.action.CalcAction">
      <forward name="result" path="/result.jsp" />
    </action>

原来实例化对象的名字叫“calcForm”，而我将jsp页面的form首字母大写了CalcForm，故造成错误。

也就是说，<bean:write name="CalcForm" property="result"/>里用到的实例化对象和配置文件里的实例化对象不匹配造成此错误的！

 

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终端： java.lang.IllegalStateException: Failed to load ApplicationContext for [WebMergedContextConfiguration@1e0a864d testClass = com.example1.big_event.BigEventApplicationTests, locations = [], classes = [com.example1.big_event.BigEventApplication], contextInitializerClasses = [], activeProfiles = [], propertySourceDescriptors = [], propertySourceProperties = ["org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true"], contextCustomizers = [org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@368247b9, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@738dc9b, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@2e8c1c9b, org.springframework.boot.test.web.reactor.netty.DisableReactorResourceFactoryGlobalResourcesContextCustomizerFactory$DisableReactorResourceFactoryGlobalResourcesContextCustomizerCustomizer@27406a17, org.springframework.boot.test.autoconfigure.OnFailureConditionReportContextCustomizerFactory$OnFailureConditionReportContextCustomizer@5d0bf09b, org.springframework.boot.test.autoconfigure.actuate.observability.ObservabilityContextCustomizerFactory$DisableObservabilityContextCustomizer@1f, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizer@2d901eb0, org.springframework.test.context.support.DynamicPropertiesContextCustomizer@0, org.springframework.boot.test.context.SpringBootTestAnnotation@d144f97a], resourceBasePath = "src/main/webapp", contextLoader = org.springframework.boot.test.context.SpringBootContextLoader, parent = null] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:180) at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:130) at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:200) at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:139) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:260) at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:159) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:215) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:197) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:215) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1709) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:570) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:560) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:265) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:636) at java.base/java.util.Optional.orElseGet(Optional.java:364) at java.base/java.util.ArrayList.forEach(ArrayList.java:1597) at java.base/java.util.ArrayList.forEach(ArrayList.java:1597) Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController': Unsatisfied dependency expressed through field 'userService': Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'userMapper': Error creating bean with name 'userMapper' defined in file [D:\HuaweiMoveData\Users\33004\Desktop\大二下\课外项目\big-event\target\classes\com\example1\big_event\mapper\UserMapper.class]: Cannot resolve reference to bean 'sqlSessionTemplate' while setting bean property 'sqlSessionTemplate' at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:788) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:768) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:146) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:509) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1451) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:606) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.instantiateSingleton(DefaultListableBeanFactory.java:1221) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingleton(DefaultListableBeanFactory.java:1187) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:1122) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:987) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:627) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:753) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) at org.springframework.boot.SpringApplication.run(SpringApplication.java:318) at org.springframework.boot.test.context.SpringBootContextLoader.lambda$loadContext$3(SpringBootContextLoader.java:144) at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:58) at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:46) at org.springframework.boot.SpringApplication.withHook(SpringApplication.java:1462) at org.springframework.boot.test.context.SpringBootContextLoader$ContextLoaderHook.run(SpringBootContextLoader.java:563) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:144) at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:110) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:225) at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:152) ... 19 more Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl': Unsatisfied dependency expressed through field 'userMapper': Error creating bean with name 'userMapper' defined in file [D:\HuaweiMoveData\Users\33004\Desktop\大二下\课外项目\big-event\target\classes\com\example1\big_event\mapper\UserMapper.class]: Cannot resolve reference to bean 'sqlSessionTemplate' while setting bean property 'sqlSessionTemplate' at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:788) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:768) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:146) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:509) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1451) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:606) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1739) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1627) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:785) ... 46 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userMapper' defined in file [D:\HuaweiMoveData\Users\33004\Desktop\大二下\课外项目\big-event\target\classes\com\example1\big_event\mapper\UserMapper.class]: Cannot resolve reference to bean 'sqlSessionTemplate' while setting bean property 'sqlSessionTemplate' at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:377) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:135) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1717) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1466) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:606) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1681) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1627) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:785) ... 60 more Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' parameter 0: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:804) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:546) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1367) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1197) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:569) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:365) ... 72 more Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:657) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:645) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1367) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1197) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:569) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:339) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:371) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:337) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1681) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1627) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:913) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791) ... 84 more Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception with message: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:199) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiateWithFactoryMethod(SimpleInstantiationStrategy.java:88) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:168) at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ... 97 more Caused by: java.lang.IllegalStateException: Cannot load driver class: com.mysql.cj.jdbc.Driver at org.springframework.util.Assert.state(Assert.java:101) at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.findDriverClassName(DataSourceProperties.java:184) at org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.determineDriverClassName(DataSourceProperties.java:174) at org.springframework.boot.autoconfigure.jdbc.PropertiesJdbcConnectionDetails.getDriverClassName(PropertiesJdbcConnectionDetails.java:49) at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.createDataSource(DataSourceConfiguration.java:62) at org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Hikari.dataSource(DataSourceConfiguration.java:127) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:171) ... 100 more ============================ CONDITIONS EVALUATION REPORT ============================ Positive matches: ----------------- AopAutoConfiguration matched: - @ConditionalOnProperty (spring.aop.auto=true) matched (OnPropertyCondition) AopAutoConfiguration.ClassProxyingConfiguration matched: - @ConditionalOnMissingClass did not find unwanted class 'org.aspectj.weaver.Advice' (OnClassCondition) - @ConditionalOnProperty (spring.aop.proxy-target-class=true) matched (OnPropertyCondition) ApplicationAvailabilityAutoConfiguration#applicationAvailability matched: - @ConditionalOnMissingBean (types: org.springframework.boot.availability.ApplicationAvailability; SearchStrategy: all) did not find any beans (OnBeanCondition) DataSourceAutoConfiguration matched: - @ConditionalOnClass found required classes 'javax.sql.DataSource', 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition) - @ConditionalOnMissingBean (types: io.r2dbc.spi.ConnectionFactory; SearchStrategy: all) did not find any beans (OnBeanCondition) DataSourceAutoConfiguration.PooledDataSourceConfiguration matched: - AnyNestedCondition 1 matched 1 did not; NestedCondition on DataSourceAutoConfiguration.PooledDataSourceCondition.PooledDataSourceAvailable PooledDataSource found supported DataSource; NestedCondition on DataSourceAutoConfiguration.PooledDataSourceCondition.ExplicitType @ConditionalOnProperty (spring.datasource.type) did not find property 'type' (DataSourceAutoConfiguration.PooledDataSourceCondition) - @ConditionalOnMissingBean (types: javax.sql.DataSource,javax.sql.XADataSource; SearchStrategy: all) did not find any beans (OnBeanCondition) DataSourceAutoConfiguration.PooledDataSourceConfiguration#jdbcConnectionDetails matched: - @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.jdbc.JdbcConnectionDetails; SearchStrategy: all) did not find any beans (OnBeanCondition) DataSourceConfiguration.Hikari matched: - @ConditionalOnClass found required class 'com.zaxxer.hikari.HikariDataSource' (OnClassCondition) - @ConditionalOnProperty (spring.datasource.type=com.zaxxer.hikari.HikariDataSource) matched (OnPropertyCondition) - @ConditionalOnMissingBean (types: javax.sql.DataSource; SearchStrategy: all) did not find any beans (OnBeanCondition) DataSourceInitializationConfiguration matched: - @ConditionalOnClass found required class 'org.springframework.jdbc.datasource.init.DatabasePopulator' (OnClassCondition) - @ConditionalOnSingleCandidate (types: javax.sql.DataSource; SearchStrategy: all) found a single bean 'dataSource'; @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.sql.init.SqlDataSourceScriptDatabaseInitializer,org.springframework.boot.autoconfigure.sql.init.SqlR2dbcScriptDatabaseInitializer; SearchStrategy: all) did not find any beans (OnBeanCondition) DataSourcePoolMetadataProvidersConfiguration.HikariPoolDataSourceMetadataProviderConfiguration matched: - @ConditionalOnClass found required class 'com.zaxxer.hikari.HikariDataSource' (OnClassCondition) DataSourceTransactionManagerAutoConfiguration matched: - @ConditionalOnClass found required classes 'javax.sql.DataSource', 'org.springframework.jdbc.core.JdbcTemplate', 'org.springframework.transaction.TransactionManager' (OnClassCondition) DataSourceTransactionManagerAutoConfiguration.JdbcTransactionManagerConfiguration matched: - @ConditionalOnSingleCandidate (types: javax.sql.DataSource; SearchStrategy: all) found a single bean 'dataSource' (OnBeanCondition) DataSourceTransactionManagerAutoConfiguration.JdbcTransactionManagerConfiguration#transactionManager matched: - @ConditionalOnMissingBean (types: org.springframework.transaction.TransactionManager; SearchStrategy: all) did not find any beans (OnBeanCondition) DispatcherServletAutoConfiguration matched: - @ConditionalOnClass found required class 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition) - found 'session' scope (OnWebApplicationCondition) DispatcherServletAutoConfiguration.DispatcherServletConfiguration matched: - @ConditionalOnClass found required class 'jakarta.servlet.ServletRegistration' (OnClassCondition) - Default DispatcherServlet did not find dispatcher servlet beans (DispatcherServletAutoConfiguration.DefaultDispatcherServletCondition) DispatcherServletAutoConfiguration.DispatcherServletRegistrationConfiguration matched: - @ConditionalOnClass found required class 'jakarta.servlet.ServletRegistration' (OnClassCondition) - DispatcherServlet Registration did not find servlet registration bean (DispatcherServletAutoConfiguration.DispatcherServletRegistrationCondition) DispatcherServletAutoConfiguration.DispatcherServletRegistrationConfiguration#dispatcherServletRegistration matched: - @ConditionalOnBean (names: dispatcherServlet types: org.springframework.web.servlet.DispatcherServlet; SearchStrategy: all) found bean 'dispatcherServlet' (OnBeanCondition) ErrorMvcAutoConfiguration matched: - @ConditionalOnClass found required classes 'jakarta.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition) - found 'session' scope (OnWebApplicationCondition) ErrorMvcAutoConfiguration#basicErrorController matched: - @ConditionalOnMissingBean (types: org.springframework.boot.web.servlet.error.ErrorController; SearchStrategy: current) did not find any beans (OnBeanCondition) ErrorMvcAutoConfiguration#errorAttributes matched: - @ConditionalOnMissingBean (types: org.springframework.boot.web.servlet.error.ErrorAttributes; SearchStrategy: current) did not find any beans (OnBeanCondition) ErrorMvcAutoConfiguration.DefaultErrorViewResolverConfiguration#conventionErrorViewResolver matched: - @ConditionalOnBean (types: org.springframework.web.servlet.DispatcherServlet; SearchStrategy: all) found bean 'dispatcherServlet'; @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.web.servlet.error.ErrorViewResolver; SearchStrategy: all) did not find any beans (OnBeanCondition) .... pom.xml: <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>3.4.5</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example1</groupId> <artifactId>big-event</artifactId> <version>0.0.1-SNAPSHOT</version> <name>big-event</name> <description>Demo project for Spring Boot</description> <url/> <licenses> <license/> </licenses> <developers> <developer/> </developers> <scm> <connection/> <developerConnection/> <tag/> <url/> </scm> <properties> <java.version>21</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>3.0.4</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.36</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>com.mysql</groupId> <artifactId>mysql-connector-j</artifactId> <version>8.1.0</version> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter-test</artifactId> <version>3.0.4</version> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> application.properties: spring.application.name=big-event spring.datasource.url=jdbc:mysql://localhost:3306/big_event?serverTimezone=UTC spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver spring.datasource.username=root spring.datasource.password=mosiyidong504
05-13
好的，用户遇到了Spring Boot项目中无法加载MySQL驱动导致的bean创建失败问题，具体错误是com.mysql.cj.jdbc.Driver类找不到。我需要一步步分析可能的原因和解决方案。 首先，用户使用的Spring Boot版本是3.4.5，这...
关于Struts 中报Cannot find bean: "XXX" in any scope 的错误备注(转于飞梦者的博客)
ai_33的专栏
05-05 1396
这个问题遇到过几次，一直没有注意是什么原因：今天改了一个bug：代码片段如下： String expression = null;   if (history != null && history.size() > 0)   {      hisInfo = (TaskInstHisInfo) history.get(history.size() - 1);      jbpmStep = his
Cannot find bean beanList in any scope错误
龙在天涯的专栏
11-19 1532
 beanList为request.setAttrabute(“”，object)存的bean的引用，这个错误往往是由于在request.setAttrabute(“”，object)的上面发生了异常，程序没能执行到这步就结束了，所以页面会报找不到bean的错误。
出现Cannot find bean name in any scope的解决办法
gundumw100的专栏
07-30 1656
, 不应该设定name属性,这里设置了,servlet把它当作一个javabean了，删掉就顺利通过了。
Cannot find 'bindActions' in scope
最新发布
12-03
你遇到的错误： ``` Cannot find 'bindActions' in scope ``` 是因为在你的代码中调用了 `bindActions()`，但这个方法 **没有定义**。这是你在原始架构中可能存在的一个自定义方法（用于绑定按钮点击、通知等），但在我们当前的实现里遗漏了它的声明。 --- ### ✅ 解决方案 既然你现在不需要复杂的事件绑定，我们可以 **安全地删除这行调用**，或者 **补全空实现** 来避免编译错误。 --- ## ✅ 方法一：推荐 —— 直接删除 `bindActions()` 调用（最干净） 修改 `tpbSetupSubviews()` 中的代码，移除不存在的方法调用： ```swift override func tpbSetupSubviews() { super.tpbSetupSubviews() setupCollectionView() // 初始化 collectionView createTabButtons() let headerView = buildHeaderView() tableView.tableHeaderView = headerView reloadData() // ❌ 删除下面这一行（因为未实现且目前不需要） // bindActions() } ``` > ✅ 当前所有交互已通过 `@objc onTabTapped` 和初始化完成，无需额外绑定。 --- ## ✅ 方法二：保留调用，但提供空实现（兼容原有架构） 如果你的基类设计要求必须存在 `bindActions()`，可以在当前类中添加一个空实现： ```swift // MARK: - Event Binding private func bindActions() { // 当前页面无额外事件需要绑定 // tab 点击已在 createTabButtons 中通过 addTarget 绑定 } ``` 然后就可以保留调用： ```swift reloadData() bindActions() // ✅ 现在不会报错了 ``` --- ## ✅ 总结 | 方案 | 适用场景 | 推荐程度 | |------|----------|----------| | **删除 `bindActions()` 调用** | 新项目 / 不依赖该方法 | ⭐⭐⭐⭐☆ | | **添加空实现** | 继承体系要求统一结构 | ⭐⭐⭐⭐ | --- ✅ 修改后，完整无报错！ ---
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